BS EN 856:2015 pdf free.Rubber hoses and hose assemblies — Rubber-covered spiral wire reinforced hydraulic type—Specification.
BS EN 856 The impulse test shall be in accordance with EN ISO 6803. The test temperature shall be 100 °C for types 4SP and 4SH and 120 °C for types R12 and R13. For types 4SP and 4SH hose, when tested at impulse pressure equal to 133 % of the maximum working pressure, the hose shall withstand a minimum of 400 000 impulse cycles.
For type R12 hose, tested at impulse pressure equal to 133 % of the maximum working pressure, the hose shall withstand a minimum of 500 000 impulse cycles. For type R13 hose, tested at impulse pressure equal to 120 % of the maximum working pressure, the hose
shall withstand a minimum of 500 000 impulse cycles.
There shall be no leakage or other malfunction before reaching the specified number of cycles.
This test shall be considered a destructive test and the test piece shall be disposed of in accordance with local environmental guidelines.
Leakage of hose assemblies When tested in accordance with EN ISO 1402:2009, 8.4 there shall be no leakage or evidence of failure. This test shall be considered a destructive test and the test piece shall be disposed of in accordance with local environmental guidelines.
When tested in accordance with method B of EN ISO 10619-2 at a temperature of -40 C there shall be no cracking of the lining or cover. The test piece shall not leak or crack when subjected to a proof pressure test in accordance with EN ISO 1402 after regaining ambient temperature.
Adhesion between components When tested in accordance with EN ISO 8033:2006, the adhesion for hose types 4SP and 4SH between lining  and reinforcement, and between cover and reinforcement shall not be less than 2,5 kN/m.When tested in accordance with EN ISO 8033:2006, the adhesion for hose types R12 and R13 between lining and reinforcement, and between cover and reinforcement shall not be less than 1,4 kN/m. Test pieces shall be type 5 for lining and reinforcement and type 2 or type 6 for cover and reinforcement as described in Table 1 of EN ISO 8033:2006.BS EN 856 pdf download.